Teknologi berkaitan fail termampat
1. Topik
Buat alat untuk mengeluarkan pakej termampat folder berbilang lapisan.
2. Idea penyelesaian masalah
Buat kelas: UnZipDirectoryFrame
Gunakan UnZipDirectoryFrame untuk mewarisi JFrame untuk membina borang
Akan ada berbilang folder pakej termampat , setiap folder mungkin mempunyai folder atau fail, untuk memulihkan hubungan hierarki folder semasa nyahmampat.
Skim menyahmampat folder yang mengandungi subfolder adalah serupa dengan menyahmampat folder yang mengandungi semua fail Perbezaannya terletak pada cara mencari semua fail dalam folder yang mengandungi subfolder, dan apabila membina ZipEntry, tidak mempunyai apa-apa. situasi nama pendua.
3. Penjelasan kod terperinci
package com.xiaoxuzhu;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.table.DefaultTableModel;
/**
* Description: 多层文件夹压缩包的释放
*
* @author xiaoxuzhu
* @version 1.0
*
* <pre class="brush:php;toolbar:false">
* 修改记录:
* 修改后版本 修改人 修改日期 修改内容
* 2022/5/4.1 xiaoxuzhu 2022/5/4 Create
*
Salin selepas log masuk
* @date 2022/5/4
*/
public class UnZipDirectoryFrame extends JFrame {
/**
*
*/
private static final long serialVersionUID = 7178478435446172846L;
private JPanel contentPane;
private JTextField chooseTextField;
private JTable table;
private File zipFile;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UnZipDirectoryFrame frame = new UnZipDirectoryFrame();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public UnZipDirectoryFrame() {
setTitle("多层文件夹压缩包的释放");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(new BorderLayout(0, 0));
JPanel choosePanel = new JPanel();
contentPane.add(choosePanel, BorderLayout.NORTH);
chooseTextField = new JTextField();
choosePanel.add(chooseTextField);
chooseTextField.setColumns(18);
JButton chooseButton = new JButton("选择压缩文件");
chooseButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
do_chooseButton_actionPerformed(arg0);
}
});
choosePanel.add(chooseButton);
JPanel buttonPanel = new JPanel();
contentPane.add(buttonPanel, BorderLayout.SOUTH);
JButton unzipButton = new JButton("开始解压缩");
unzipButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
do_unzipButton_actionPerformed(arg0);
}
});
buttonPanel.add(unzipButton);
JScrollPane scrollPane = new JScrollPane();
contentPane.add(scrollPane, BorderLayout.CENTER);
table = new JTable();
scrollPane.setViewportView(table);
}
protected void do_chooseButton_actionPerformed(ActionEvent arg0) {
JFileChooser fileChooser = new JFileChooser();
fileChooser.setFileFilter(new FileNameExtensionFilter("文本文件", "zip"));
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
int result = fileChooser.showOpenDialog(this);
if (result == JFileChooser.APPROVE_OPTION) {
zipFile = fileChooser.getSelectedFile();
chooseTextField.setText(zipFile.getAbsolutePath());
}
}
protected void do_unzipButton_actionPerformed(ActionEvent arg0) {
DefaultTableModel model = (DefaultTableModel) table.getModel();
model.setColumnIdentifiers(new Object[] { "序号", "文件名" });
List
list = new ArrayList();
try {
unzip(zipFile, list);
for (int i = 0; i < list.size(); i++) {
model.addRow(new Object[] { i + 1, list.get(i) });
}
table.setModel(model);
JOptionPane.showMessageDialog(this, "解压缩完成");
} catch (IOException e) {
e.printStackTrace();
}
}
private static void unzip(File zipFile, List list) throws IOException {
// 利用用户选择的ZIP文件创建ZipInputStream对象
ZipInputStream in = new ZipInputStream(new FileInputStream(zipFile));
ZipEntry entry;
while ((entry = in.getNextEntry()) != null) {// 遍历所有ZipEntry对象
if (!entry.isDirectory()) {// 如果是文件则创建并写入
File tempFile = new File(zipFile.getParent() + File.separator + entry.getName());
list.add(tempFile.getName());// 增加文件名
new File(tempFile.getParent()).mkdirs();// 创建文件夹
tempFile.createNewFile();// 创建新文件
FileOutputStream out = new FileOutputStream(tempFile);
int b;
while ((b = in.read()) != -1) {// 写入数据
out.write(b);
}
out.close();// 释放资源
}
}
in.close();
}
}
Penyahmampatan berjaya:
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